/Engine/Source/Runtime/AIModule/Classes/BehaviorTree/Decorators/BTDecorator_Blackboard.h
Notify about change in blackboard keys
virtual EBlackboardNotificationResult OnBlackboardKeyValueChange ( const [UBlackboardComponent](API\Runtime\AIModule\BehaviorTree\UBlackboardComponent) & Blackboard, [FBlackboard::FKey](API\Runtime\AIModule\BehaviorTree\Blackboard\FKey) ChangedKeyID )